Richter magnitude scale: Timeline

1884   A severe earthquake Earthquake

An earthquake is a phenomenon [i] that results from and is powered by the sudden release of stored energ ... 

, magnitude 5.5 Richter magnitude scale

Richter magnitude test scale assigns a single number to quantify the size of an earthquake [i]. ... 

, (intensity VII) occurs off the northeast Atlantic coast. The area affected extends from central Virginia Virginia

The Commonwealth of Virginia is one of the original thirteen colonies [i] of the United States [i] ... 

 to southern Maine Maine

Maine is a U.S. state [i] in the New England [i] region of the northeastern United States [i]. ... 

, and west as far as Cleveland.

1952   A magnitude 7.5 earthquake Earthquake

An earthquake is a phenomenon [i] that results from and is powered by the sudden release of stored energ ... 

 (richter scale Richter magnitude scale

Richter magnitude test scale assigns a single number to quantify the size of an earthquake [i]. ... 

) strikes Tehachapi, California, destroying unreinforced brick buildings.

2004   A 6.5 Richter scale Richter magnitude scale

Richter magnitude test scale assigns a single number to quantify the size of an earthquake [i]. ... 

 earthquake in Northern Morocco Morocco

The Kingdom of Morocco is a country in North Africa [i]. ... 

 hits in the Rif mountains near the city of Al Hoceima, killing 400. Ait Kamara is destroyed; 517 are killed.